大约有 15,600 项符合查询结果（耗时：0.0224秒） [XML]
How can you find the height of text on an HTML canvas?
...t, descent and height (which is just ascent + descent for convenience). To test it, it's worth having a function that draws a horizontal line:
var testLine = function(ctx, x, y, len, style) {
ctx.strokeStyle = style;
ctx.beginPath();
ctx.moveTo(x, y);
ctx.lineTo(x + len, y);
ctx.closePat...
Java 8 Streams - collect vs reduce
...Salary);
}
public Integer getSalary(){
return this.salary;
}
}
@Test
public void testReduceWithImmutable(){
List<Employee> list = new LinkedList<>();
list.add(new Employee("1"));
list.add(new Employee("2"));
list.add(new Employee("3"));
Integer sum = list
.stream(...
Is this a “good enough” random algorithm; why isn't it used if it's faster?
...ckage com.stackoverflow.q14491966;
import java.util.Arrays;
public class Test {
public static void main(String[] args) throws Exception {
QuickRandom qr = new QuickRandom();
int[] frequencies = new int[10];
for (int i = 0; i < 100000; i++) {
frequencies[...
How to pass command line arguments to a rake task
...onParser) you could use something like this:
$ rake user:create -- --user test@example.com --pass 123
note the --, that's necessary for bypassing standard Rake arguments. Should work with Rake 0.9.x, <= 10.3.x.
Newer Rake has changed its parsing of --, and now you have to make sure it's not p...
DynamoDB vs MongoDB NoSQL [closed]
... but after transferred to DynamoDB, occupy only 300M storage. I may need a test and see what the storage if I migrate those data to MongoLab :)
– Mason Zhang
Aug 8 '13 at 7:51
1
...
Why does Environment.Exit() not terminate the program any more?
...-duck out. It implements the Visual Styles theming API and is used by this test program. I can't be sure, but my money is on that one as the source of the problem. The copy in C:\WINDOWS\system32 has version number 6.2.9200.16660, created on August 14th, 2013 on my machine.
Case closed.
...
Finding what branch a Git commit came from
... command works like a charm:
git name-rev <SHA>
For example (where test-branch is the branch name):
git name-rev 651ad3a
251ad3a remotes/origin/test-branch
Even this is working for complex scenarios, like:
origin/branchA/
/branchB
/commit<SHA1>
...
node and Error: EMFILE, too many open files
...n...
To get a count of open files for a certain pid
I used this command to test the number of files that were opened after doing various events in my app.
lsof -i -n -P | grep "8465" | wc -l
# lsof -i -n -P | grep "nodejs.*8465" | wc -l
28
# lsof -i -n -P | grep "nodejs.*8465" | wc -l
31
# lsof -i ...
C# version of java's synchronized keyword?
...ly apply thread-safety when you know you actually are going to use it (and test it).
For the method-level stuff, there is [MethodImpl]:
[MethodImpl(MethodImplOptions.Synchronized)]
public void SomeMethod() {/* code */}
This can also be used on accessors (properties and events):
private int i;
p...
Code signing certificate for open-source projects?
...free - the reference to open source code signing has been removed from the test certificates page, and there is now a separate product page en.sklep.unizeto.pl/data-safety/code-signing-certificates/…. At €14 they're much cheaper than other certificates though. The signup process seems to be the ...